Wait for about 1 second for the reading to stabilize

1/4" quick-connect fittings (pre-installed)

Regular replacement maintains measurement precision

Simply fill the upper reservoir and let gravity do the work

Potassium — supports fluid regulation

HM Digital COM-80 + PH-80 + PH-STOR + C342 COMBO - PH/TDS/EC/PPM Meter contaminant removal Wait for about 1 secondHM Digital COM 80 TDS EC meter + PH 80 pH meter + PH STOR storage solution + C342 ppm TDS EC solution Meter Solution COMBO COM 80 COM 80: EC TDS HydroTester Series The COM 80 is easily the most advanced economically priced, reliable EC TDS meter on the market. With its versatility and durability, it is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more.